Blar i Lectures på forfatter "Olsen, Kjell"

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    • Fish behaviour and acoustic sampling 

      Olsen, Kjell (Conference object, 1990)
      Fish behaviour may lead in several ways to uncertainties in acoustic abundance estimation. Practical echo-surveying work faces a number of situations where aspects of fish behaviour may be of importance. Unfavourable ...

    • Target strength measurements of fish 

      Nakken, Odd; Olsen, Kjell (Symposium on acoustic methods in fisheries research, Bergen, Norway, 19-22 June, 1973, Conference object, 1973)